diff --git a/api/catalog.go b/api/catalog.go
index 337772ec0..7e33bf2f4 100644
--- a/api/catalog.go
+++ b/api/catalog.go
@@ -7,6 +7,8 @@ type Node struct {
 }
 
 type CatalogService struct {
+	CreateIndex		 uint64
+	ModifyIndex		 uint64
 	Node                     string
 	Address                  string
 	TaggedAddresses          map[string]string